Weed-exterminator.



D. W., F. L. 62 H. A. MANNHARDT.

WEED EXTERMINATOR.

APPLICATION FILED 00129, 191 4.

I l l 7. Patented Apr. 24, 1917.

F [JJVan/a karal i, 7 Mann hard i,

IDANIEI: W. MANNHARDLFBEDRICK II. MANN'HARDT, AND HERMAN A. MANNHARDT,

OF WASHINGTON, IOWA.

. WEED-EXTERMINATOR.

Specification of Letters Patent. Pantg mteqfl Apr, 243 11911 '7 Application filed October 29, 1914. Serial ire-scams.

To all whom e't may concerto:

Be it known that we, DANIEL W. MANN- HARDT, FREDRICK L. MANNHARDT, and HER- MAN A. 'MANNHARDT, citizens of the United States, residing at Washington, in the county of Washington and State of Iowa, have invented certain new and useful Improvements in Weed-Exterminators; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Our invention relates to new and useful improvements in devices for exterminating noxious weeds and parasites.

The primary object of our invention is to provide a simple, inexpensive, and portable device of the character described which consists of a tube carrying at its lower end a nozzle and means for forming a hole in the ground whereby the roots of the weeds may be poisoned by a predetermined quantity of liquid discharged from the tube.

Another ob ect is to generally improve devices of the character described so asto render them more practical, reliable and ethcient in operation and commercially desira le.

The above and additional objects are accomplished by such means as are illustrated in the accompanying drawings described in the following specification and then more particularly pointed out in the claim.

With reference to the drawings, wherein we have illustrated the preferred embodiment of our invention as it is reduced to practice, and throughout the several views of which similar reference numerals designate corresponding parts.

Figure l is a side elevation of our improved weed exterminator, and a Fig. 2 is an enlarged vertical sectional view being broken away.

Referring to the drawings by characters of reference, 1 designates as an entirety a cylindrical tank or reservoir in which a suitable quantity of weed exterminating chemical is contained. An approximately U- shaped handle 2 is secured upon the reservoir 1 to provide means for carrying the device. Mounted upon the upper wall of the cvoir 1 is a filling cap 3 which seals an ing by means of which the reservoir may be filled. Central apertures, alining with one another are provided in the top and bottom walls of the reservoir and a tube 4 is inserted through the apertures and has its upper end disposed above. the upper wall of the reservoir, and screw threaded. The reservoir 1 is supported upon a flange 5 rigidly secured to the tube 4 and is secured in position thereon by an internally screw threaded and flanged cap 5 mounted upon the upper screw threaded end of the tube 4 which engages the top wall of said reservoir. An aperture 6 is formed in the tube 4 and communicates the interior of the tube with the reservoir, 1, said-aperture being disposed at a point adjacent the lower wall of said reservoir.

Connected by means of a cylindrical internally threaded coupling 7 withthe lower end of the tube 4 which is externally screw threaded is a tubular nozzle 8 which has its inner end turned within the coupling member and is tapered. toward its discharge end. This nozzle 8 is designed to be inserted into the ground-and as a means for limiting the movement of the nozzle relative to the ground, we provide an annular flange 9 ormed integral with the nozzle at a point adjacent to the inner end thereof. The flange 9 extends at right angles to the nozzle and acts as a stop therefor. The inner end of the nozzle 8 supports a Washer ring 10 which acts as a valve seat and a cylindrical valve rod 11 of considerably less diameter than the tube 4 is longitudinally slidably mountedwithin said tube 4 and nozzle 8. A cylindrical valve 12 is carried by the rod 11 and arranged to seat upon the- Washer ring 10. J I Carried by the rod 11 and normally disposed at a point above the opening 6 in said stem when the valve 12 is closed, is a pump piston 13 which operates to draw the liquid from the reservoir into the tube and force the cap 5 a considerable distance and is provided with a right angularly directed upper terminal 15 upon which is mounted a suitable handle 16. The handle 16 is sufi'iciently spaced from the handle 2 to permit the operator to hold the device with two hands and move the handle 16 up and downfwithout interference. Y

The rod 11 extends beyond the valve 12 through the nozzle 8 and terminates at a point considerably spaced from the dis charge end of said nozzle. The bore "of the nozzle 8 is of slightly greaterdiameter than that of the rod 11 to allow the liquid to be discharged through the nozzle. The lower end of the rod 11 is pointed asat 17 so that the stem will readily penetrate the ground.

In operation assuming that the reservoir 1 is filled with a suitable liquid for exterminating noxious weeds and parasites, the nozzle 8 and pointed lower end 17 of the stem are inserted into the ground at the desired place. It is preferable to push the'nozzle and stem into the ground until the stop flange 9 limits the movement of the device and upon the upward movement of the stem, effected by graspin and lifting the handle 16 upwardly, a c arge of exterminating liquid will be drawn through the aperture 6 into the tube 4. When the pointed extremity 17 of the rod 11 is withdrawn from the ground, a clean opening is formed, thus,

upon the downward movement of the pump piston 13 the liquid. is forced through the nozzle and into the aperture formed in the ground and will saturate the roots of the plants and destroy all parasites.

While operating the device the operator preferably grasps the handle 2 with the left hand and the handle 16 is. operated with the right hand. The device is comparatively light and of simple construction thus it may be carried from place to place with ease. The tube 4 and nozzle 8 may be taken down relative to each other and the reservoir 1 and the device packed into small space for shipment. The spring 1 holds the valve 12 nor mally closed so that waste of the liquid is prevented.

In practice, we have found that the form of our invention, illustrated in the drawings and referred to in the above description, as

the preferred embodiment, is the most eflicient and practical; yet realizing that the conditions concurrent with the adoption of our device will necessarlly vary, we desire to emphasize the fact that various minor changes in details of construction, proportion and arrangement of parts may be resorted to, when required, without sacrificing any of the advantages of our invention, as set forth.

What is claimed is A weed exterminator comprising a reservoir having alined openings in itstop and bottom walls, a tube extending through said alined openings, said tube having its ends externally screw-threaded, a circular flange formed on said tube and engaging the bottom of said reservoir to support the same, a screw cap fitted on the outer end of said tube to close the same and to hold said reservoir in engagement with said flange, said tube having an opening therein communicating with the reservoir, a discharge nozzle having a tapered end fitted on the lower screw threaded end of. said tube, a circular flange formed integral with said nozzle, a valve stem extending through said nozzle and said tube and having its ends extending above the reservoir and beyond the lower end of the nozzle, an operating handle formed on the upper portion of said valve stem, a valve carried by said stem and arranged to seal the inner. end of said nozzle, a piston carried by said stem and disposed above said aperture, and a coil spring on said valve stem and having its ends bearing against said cap. and piston respectively.

In testimony whereof we afiix our signatures in presence of two witnesses.

DANIEL W. MANNHARDT. FRED. L. MANNHARDT. HERMAN A. MANNHARDT.

Witnesses:

A. G. Bns'mnmnmm, A. J. FULLER. 

